The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 2021
Filed:
Feb. 04, 2019
Olympus Corporation, Tokyo, JP;
Toshiaki Matsuzawa, Tokyo, JP;
OLYMPUS CORPORATION, Tokyo, JP;
Abstract
A calibration device includes: a two-dimensional image conversion element having a plurality of pixels; and an optical system for forming an image-formation relationship between the two-dimensional image conversion element and a three-dimensional world coordinate space, the calibration device including a computer, the computer being configured to: acquire calibration data indicating a correspondence between two-dimensional pixel coordinates in the image conversion element and three-dimensional world coordinates in the world coordinate space; and calculate parameters of a camera model by fitting, to the acquired calibration data, the camera model representing two coordinate values of the two-dimensional pixel coordinates as functions of three coordinate values of the three-dimensional world coordinates, wherein the camera model represents the two coordinate values of the two-dimensional pixel coordinates by means of a linear sum of a plurality of two-dimensional vector functions having, as elements, the functions of the three coordinate values of the three-dimensional world coordinates.